/*
 *  Copyright 2004 Blandware (http://www.blandware.com)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.blandware.atleap.webapp.action.core.user;

import com.blandware.atleap.common.Constants;
import com.blandware.atleap.common.util.StringUtil;
import com.blandware.atleap.model.core.Group;
import com.blandware.atleap.model.core.Role;
import com.blandware.atleap.model.core.User;
import com.blandware.atleap.service.core.GroupManager;
import com.blandware.atleap.service.core.UserManager;
import com.blandware.atleap.service.exception.BeanAlreadyExistsException;
import com.blandware.atleap.webapp.action.core.BaseAction;
import com.blandware.atleap.webapp.form.core.UserForm;
import com.blandware.atleap.webapp.util.core.WebappConstants;
import com.blandware.atleap.webapp.util.core.WebappUtil;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

/**
 * <p>Creates new user
 * </p>
 * <p><a href="CreateUserAction.java.html"><i>View Source</i></a></p>
 * <p/>
 *
 * @author Sergey Zubtsovskiy <a href="mailto:sergey.zubtsovskiy@blandware.com">&lt;sergey.zubtsovskiy@blandware.com&gt;</a>
 * @version $Revision: 1.26 $ $Date: 2008/04/29 17:51:49 $
 * @struts.action path="/core/user/create"
 * name="userForm"
 * scope="request"
 * input="inputForward"
 * validate="true"
 * roles="core-user-create"
 * @struts.action-forward name="inputForward"
 * path=".core.user.create"
 * @struts.action-forward name="callAssignRolesAndGroups"
 * path="/core/user/callAssignRolesAndGroups.do"
 * redirect="false"
 * @struts.action-forward name="listUsers"
 * path="/core/user/list.do"
 * redirect="true"
 * @struts.action-forward name="unsatisfiable"
 * path="/core/user/list.do"
 */
public final class CreateUserAction extends BaseAction {
	/**
	 * @param mapping  The ActionMapping used to select this instance
	 * @param form     The optional ActionForm bean for this request (if any)
	 * @param request  The HTTP request we are proceeding
	 * @param response The HTTP response we are creating
	 * @return an ActionForward instance describing where and how
	 *         control should be forwarded, or null if response
	 *         has already been completed
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
	                             HttpServletRequest request, HttpServletResponse response) throws Exception {

		if ( !isCancelled(request) ) {

			UserForm userForm = (UserForm) form;
			User user = new User();
			WebappUtil.copyProperties(user, userForm, request);
			user.setEnabled(Boolean.TRUE);

            GroupManager groupManager = (GroupManager) getBean(Constants.GROUP_MANAGER_BEAN);
			Group usersGroup = groupManager.retrieveGroup(Constants.USERS_GROUP);
            usersGroup.addUser(user);
            List usersGroupRoles = usersGroup.getRoles();
            for (int i = 0; i < usersGroupRoles.size(); i++) {
                Role role = (Role) usersGroupRoles.get(i);
                user.addRole(role, usersGroup);
            }

			boolean encryptPassword = ((Boolean) getConfiguration().get(Constants.ENCRYPT_PASSWORD)).booleanValue();
			String encAlgorithm = (String) getConfiguration().get(Constants.ENC_ALGORITHM);
			if ( encryptPassword ) {
				user.setPassword(StringUtil.encodePassword(userForm.getPassword(), encAlgorithm));
			}
			UserManager userManager = (UserManager) getBean(Constants.USER_MANAGER_BEAN);
			try {
				userManager.createUser(user);
			} catch ( BeanAlreadyExistsException e ) {
				// user already exists
				ActionMessages errors = new ActionMessages();
				errors.add("userAlreadyExists", new ActionMessage("core.user.errors.alreadyExists"));
				saveErrors(request, errors);
				saveToken(request);
				return mapping.getInputForward();
			}

			if ( request.isUserInRole("core-user-assignRolesAndGroups") ) {
				request.setAttribute(WebappConstants.USER_NAME_KEY, user.getName());
				return mapping.findForward("callAssignRolesAndGroups");
			} else {
				return mapping.findForward("admin");
			}
		} else {
			if ( request.isUserInRole("core-user-list") ) {
				return mapping.findForward("listUsers");
			} else {
				return mapping.findForward("admin");
			}
		}
	}
}